Understanding_ the_Cleaning_Process_for_Automatic_Stencil_Printers - 第27页

Preven tive Main tenanc e • Chec k the ow ner's manual for preventive maintenance for y our individual mac hine • Replace V acuu m f ilte r s base d on re quirem ents • Chec k main drive belts/c ha ins f or pr ope r…

Solvent conclusions

• Evaporation rate of chemistry critical to printer application

• Good indicator is the flash point of the material – the lower the

flashpoint – the better the evaporation rate

• Test for residues – mirror test

• Avoid water-based solvents for the printer

• Petroleum based solvents should be also be avoided

• Check with your paste manufacturer for compatibility of solvents

• Work with chemistry vendors for best application

• Always start wipe cycle with the solvent wipe

• Match the solvent to the material and application – one size does

not fit all

Understanding the Cleaning Process for Automatic Stencil Printers

Preventive Maintenance

• Check the owner's manual for preventive maintenance for your individual machine

• Replace Vacuum filters based on requirements

• Check main drive belts/chains for proper tension

• Clean all bushings and remove any foreign material from wiper assembly

• Check and replace vacuum hosing as needed especially if using solvent

• Remove plenum and remove any material build up in trough – check plenum bow if present

• Inspect plenum for damage – verify match of plenum to stencil/foil size

Understanding the Cleaning Process for Automatic Stencil Printers

Random Stuff

• Motion additions to wiping process has shown no improvement in wiping

• Ultrasonic

• X- Motion

• Nano- coating of stencils

• Confusion on Aculon Nano-Clear – reduces wipes/ buildup of paste – not focused on release

• Nano-coating will wear from the bottom of stencil

• New coating methods – Plasma coating / baking improve coating life

• Paper wash

• No input

• Paperless wiper development

• Effectiveness of wipe

• How to indicate alternative wiping material is contaminated

• TBD

Understanding the Cleaning Process for Automatic Stencil Printers